Corten steel (Weathering Steel), is a special steel alloy that develops a protective oxide layer on its surface when exposed to atmospheric conditions, giving it a rusted appearance. This rust layer acts as a shield against deep corrosion, allowing the material to remain durable for many years. It is widely preferred in architectural, landscape, and façade cladding projects for both its aesthetic appeal and durability.

Thanks to the alloying elements it contains, Corten steel offers significantly higher resistance to outdoor conditions compared to conventional carbon steels.

Features and Benefits

• Forms its own protective rust layer: No painting or coating required.
• High atmospheric resistance: Resistant to rain, wind, UV exposure, and temperature fluctuations.
• Long service life: Requires lower maintenance compared to traditional steels.
• Natural and distinctive appearance: Color tones evolve over time, creating a unique surface character.
• Recyclable: A key material advantage for sustainable projects.

Visual and Architectural Impact

Over time, the surface of Corten steel may transition into the following tones:

🟠 Initial orange rust formation
🟤 Brown–reddish transformation
🔴 Darker and matte patina appearance

This transformation gives projects an industrial, natural, and sculptural character.

Application Areas

• Façade cladding systems
• Landscape and garden architecture
• Urban furniture (benches, trash bins, signage)
• Art installations and sculptures
• Roof cladding and shutter systems
• Door and wall claddings